Your opening notebook, alive — on your phone.
Import your Lichess studies in one tap, or pull your Chess.com games. It drills your lines, checks your real games against them, and never forgets. Offline engine included.
Free for players, students & coaches — no account, no ads, no caps, forever. An optional Supporter donation keeps it running.
Independent project — not affiliated with Lichess or Chess.com.
Lichess studies on mobile — the feature the app doesn’t have.
Years of prep lives in Lichess studies, but on a phone they open as a bare move list — no interactive play-through, no drilling, no way to make one. Chesslinebook picks up where the app leaves off.
📥 Import a study in one tap
Paste a study link and every chapter becomes a line on a real board — comments, variations, and custom positions intact.
🎯 Interactive, like studies should be
Practice mode plays the other side while you prove you know yours — then spaced repetition brings each line back right before you’d forget it.
🔎 Your games, checked against your prep
Pull your recent Lichess or Chess.com games and get plain-English coaching on the exact move you left your lines — offline, on your device.
You keep losing the same way — you just can’t see it.
Three gaps stall almost every improving player. Chesslinebook closes all three in one app.
Notes that rot
Opening prep sits in static docs that never quiz you — and never notice when you stop following them.
No diagnosis after a loss
You can’t pinpoint why you lost. The opening? A hung piece? A missed tactic? A won game thrown away?
Coaches fly blind
Between lessons, a coach has no view of what a student practiced or where they keep going wrong.
Build your repertoire
Notebooks for White and Black, organized by opening family.
Enter moves on the board — tap or drag — or paste PGN, with full variation support and a comment on any move.
Import your Lichess studies whole — paste a study link and its chapters become drillable lines, comments, variations and custom positions intact.
Starter packs — one tap adopts a ready repertoire (Italian, Caro-Kann, London, a kid-safe anti-Scholar’s-Mate pack) as your own editable notebook. Prune it, rename it, make it yours.
Move stats on every position — see what you and your opponents actually played from here and how you scored, straight from your own games. Connect a free Lichess token and real-world popularity and win rates appear too.
About 60 built-in main lines plus a sample notebook, so it’s useful on day one.
So what — your opening prep, finally in one living place.
Drill until it sticks
Memorization that actually holds — not just re-reading your notes.
Practice mode
Walks you through a line and plays the other side, varying its prepared replies so repeats stay fresh. When the line ends, keep playing the position out against the engine.
Spaced repetition
Resurfaces lines that are due, scores each run, tracks what you’ve memorized — and syncs across devices. Pick your daily pace and the most overdue lines come first. No review avalanches, ever.
Trap library
Warns you about the common pitfalls hiding in the openings you actually play.
🔥 Streaks & daily goals
A five-drill daily goal and a streak counter keep the habit alive — reviews, practice lines and puzzles all count.
Review your real games
Import recent games from Lichess, Chess.com, or paste PGN.
Every move gets a quality glyph and board arrows for the engine’s best line — and the app flags the exact move you left book.
It watches for new games — play online, open the app, and a one-tap chip flags what you haven’t reviewed yet.
Every scan feeds your leak report — the opening mistakes you keep repeating, aggregated across all your games, worst first.
So what — your own losses become your training set.
Your blunders become puzzles
No other app turns your own mistakes into a puzzle set you re-solve until the pattern sticks.
Import the game
Pull a loss straight from Lichess or Chess.com.
Find the mistake
The app marks the decisive error and replays you to that exact moment.
Re-solve until it sticks
Find the better move — then drill it again so the pattern holds.
A grandmaster engine, offline
A bundled Stockfish engine runs on-device — evaluation and best-move lines in any position, no connection needed.
Cloud evals and opening-explorer stats layer in when you’re online.
Tap a suggested move to drop it straight into your notebook.
So what — a grandmaster second opinion in your pocket, on a plane or off.
A coach-style diagnosis, automatically
What’s my biggest reason for losing?
What mistake do I make over and over?
What are the top 3 things to work on?
Automatic coaching insights — engine-powered analysis of your games, in plain English.
Run your whole roster from one screen
The oversight a private coach usually cobbles together across five tools — in one app. The biggest thing Chessable, Lichess, and Chess.com don’t give a solo coach.
Student reports — win/loss record, recent games, weakness-by-opening, and each student’s own coaching summary.
Progress dashboards — per-student review coverage and puzzle solve-progress, synced from their devices.
Activity awareness — see who practiced when, and who has new activity since your last check-in.
Class codes — kids join by typing a code and a first name. No student email, no passwords, no accounts to manage — built for scholastic clubs.
Simple mode — class kids land on a big board with big buttons and plain words, no jargon, no clutter. The full app is one Settings toggle away.
Inline feedback
Leave a comment right on a move. The student sees it in red and is guided straight to it.
One-tap assignment
From a student’s weak spot, assign a matching repertoire to drill — in a single tap.
Print it. Yes, really.
Repertoire sheets — any notebook prints like a book chapter: every line with its moves, comments, and a diagram, in ink-friendly black and white.
Puzzle worksheets — positions from your students’ own games up front, answers on the last page. Club-night homework in one tap.
Or pick “Save as PDF” in the print dialog and send it to the whole team.
So what — the kids without devices, the Chromebook-cart weeks, and everyone who studies best on paper are all covered.
The only single feedback loop
| Chessable | Lichess | Chess.com | Chesslinebook | |
|---|---|---|---|---|
| Build your own repertoire | Limited | Yes | Limited | Yes, board-first |
| Spaced repetition on your lines | Paid | — | — | Yes, free |
| Auto-grade your real games | — | Basic | Yes | Yes + drills |
| Puzzles from your own blunders | — | — | — | Yes |
| Ready-made starter repertoires | Paid courses | — | Limited | Free, yours to edit |
| Opening-leak report across your games | — | — | Partial | Yes |
| Import Lichess studies as drills | — | View only | — | Yes |
| Kids join with a class code, no email | — | — | — | Yes |
| Print repertoire sheets & puzzle worksheets | — | — | — | Yes |
| Plain-English “why you lose” | — | — | Partial | Yes |
| Solo-coach student dashboard | — | — | — | Yes, core |
| Works fully offline | — | — | — | Yes |
Everything exports in one click
Settings → Your data downloads every notebook as portable PGN — plus a full backup with your notes, review history, and puzzle bank. Any notebook shares as a plain link: the copy travels inside the URL itself, nothing uploaded, no account needed on either end. Works offline, syncs conflict-safe across devices, and leaves with you the day you want it to. No lock-in is the point.
Free for everyone. Forever.
Every feature — including the whole coach suite — is free, with no caps and no ads. Our pledge: nothing you use today will ever move behind a paywall.
Free
Supporter
100% OPTIONALEvery feature is already yours for free. As a thank-you, supporters get:
Supporter billing arrives with the App Store & Google Play launch. Chesslinebook runs lean — one supporter covers the costs of about a hundred free users.
See why you lose. Then fix it.
Free for everyone, forever — live now on the web, installable, works offline, no account required. Native iPhone and Android apps are coming to the App Store and Google Play.